When light waves pass through the lenses of a pair of glasses the light waves

You are standing on a train station platform as a train goes by close to you. As the train approaches, you hear the whistle sound at a frequency of f1 = 94 Hz. As the train recedes, you hear the whistle sound at a frequency of f2 = 72 Hz.

What are lowland areas on the moon

Josh starts his sled at the top of a 2.9-m-high hill that has a constant slope of 25∘. After reaching the bottom, he slides across a horizontal patch of snow.

A car drives to the right. There is a large amount of air resistance, and the car's engine provides the car's forward motion. Which force on the free-body diagram below represents the air resistance acting on the car?

Give the approximate bond angle for a molecule with an octahedral shape. A) 109.5°B) 180°C) 120°D) 105°E) 90°

A student measured the mass of a rock to be 19.8 grams; the actual mass was 18.6 grams. What was the student's percent deviation?

The height of the Washington Monument is measured to be 170 m on a day when the temperature is 35.0ºC. What will its height be on a day when the temperature falls to - 10.

Which of the following is a way humans have impacted the rainforest, but not the tundra?

Explain what happens when a massive star ends its life as a supernova.

Freckles are a dominant trait in humans. Both of the girls have the genotype FF for freckles. If either one marries a man with no freckles, what are the chances that their children will have freckles? A) 0% B) 50% C) 75% D) 100%